?repeats the group contents below at most once:
\h*any horizontal whitespace character, repeated any number of times
;the literal ; (5910 / 738 / 3B16)
\h*any horizontal whitespace character, repeated any number of times
*matches any number of characters from the set below:
\hany horizontal whitespace character
\wany word character
_the literal _ (9510 / 1378 / 5F16)
-the literal - (4510 / 558 / 2D16)
\h*any horizontal whitespace character, repeated any number of times